. >> reporter: sergeant adam jack stepped on an ied while on patrol in afghanistan. >> without, like, the advances in technology, i feel that, you know, i wouldn't have come as far as i have. >> reporter: just down the hall, the apartment lab. >> that's where you learn to open a door again. unlock a lock. >> reporter: and patients from walter reed helped design this area, where they can test their prosthetics in private. any problems, they head to the lab across the hall. >> in minutes, they can get things like that taken care of. >> reporter: all they need now are the patients. >> it is rewarding to final see the finish line in sight. >> reporter: in bethesda, melissa melai, news4. >>> and coming up -- >> you can feel so much better throughout the day. you can do so much more. >> the workout that helps this actor shine on stage while flaunting his washboard absen. and how a father turns his son into a stanley! stanley! come here! somebody help! [ nail gun firing ] [ nails ricocheting ] [ paint splashes ] my hero! anyone can be a hero with the new get yours for a limited time only. am